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2950-45-0

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Basic Information

Molecular Structure:
CAS No.:	2950-45-0
Name:	2,2,4,4,6,6,8,8-octachloro-2,2,4,4,6,6,8,8-octahydro-1,3,5,7,2,4,6,8-tetraazatetraphosphocine
Article Data:	28

Formula:	Cl8N4 P4
Molecular Weight:	463.546
Synonyms:	1,3,5,7,2,4,6,8-Tetrazatetraphosphocine,2,2,4,4,6,6,8,8-octachloro-2,2,4,4,6,6,8,8-octahydro- (8CI,9CI);1,1,3,3,5,5,7,7-Octachlorocyclotetraphosphaza-1,3,5,7-tetraene;Dichlorophosphazene cyclic tetramer;NSC 37389;Nitrogen chloride phosphide((NPCl2)4);Octachlorocyclophosphazatetraene;Octachlorocyclotetraphosphazatetraene;Octachlorocyclotetraphosphazene;Octachlorotetraphosphazene;Octachlorotetraphosphonitrile;Phosphonitrilechloride, cyclic tetramer;Phosphonitrilic chloride cyclic tetramer;Phosphonitrilic chloride tetramer;Tetraphosphonitrile chloride;
EINECS:	220-972-1
Density:	2.58g/cm³
Melting Point:	123-124 °C
Boiling Point:	°Cat760mmHg
Flash Point:	°C
PSA:	88.68000
LogP:	7.43760

Synthetic route

: 10026-13-8, 874483-75-7
phosphorus pentachloride

: 12125-02-9
ammonium chloride

A: 940-71-6
2,2,4,4,6,6-hexachloro-1,3,5-triaza-2,4,6-triphosphorine

B: 14514-98-8
(NPCl2)8

C: 2950-45-0
octachlorocyclotetraphosphazene

D: Cl18N9P9

E: 13596-41-3
pentakisphosphorus nitride dichloride

F: 2851-52-7
hexakisphosphorus nitride dichloride

G: 13827-30-0
heptakisphosphorus nitride dichloride

Conditions	Yield
In chlorobenzene Schlenk technique; Reflux;	A 64% B 6% C 5% D 2% E 16% F 16% G 13%

: 10026-13-8, 874483-75-7
phosphorus pentachloride

: 12125-02-9
ammonium chloride

: 2950-45-0
octachlorocyclotetraphosphazene

Conditions	Yield
With pyridine In 1,1,2,2-tetrachloroethane at 130℃; for 8h;	58.2%

: 10026-13-8, 874483-75-7
phosphorus pentachloride

: 7664-41-7
ammonia

A: 940-71-6
2,2,4,4,6,6-hexachloro-1,3,5-triaza-2,4,6-triphosphorine

B: 2950-45-0
octachlorocyclotetraphosphazene

C: ammonium chloride

Conditions	Yield
In tetrachloromethane pptn. of NH4Cl from a soln. of 3 g PCl5 in 1000 ml CCl4 half-saturated with gaseous NH3 at -3 °C; soln. contains (PNCl2)3 and (PNCl2)4;; evapn. of the mother liquor, fractional crystn. from toluene;;
In tetrachloromethane pptn. of NH4Cl from a soln. of 3 g PCl5 in 1000 ml CCl4 half-saturated with gaseous NH3 at -3 °C; soln. contains (PNCl2)3 and (PNCl2)4;; evapn. of the mother liquor, fractional crystn. from toluene;;

: ammonium chloride

: 7782-50-5
chlorine

: 7719-12-2, 52843-90-0
phosphorus trichloride

A: 940-71-6
2,2,4,4,6,6-hexachloro-1,3,5-triaza-2,4,6-triphosphorine

B cyclic polyphosphorus nitride dichloride: cyclic polyphosphorus nitride dichloride

C: 2950-45-0
octachlorocyclotetraphosphazene

Conditions	Yield
In further solvent(s) dissolving PCl3 distd. under N2 in benzyl chloride distd. under N2; addn. of NH4Cl dryed in vac. and passing in the corresponding amount of Cl2; heating in a stream of N2 at 130 °C; removal of formed HCl by a stream of N2;; filtration, distg. off the solvent at 40 °C and 0.5 Torr; recrystn. from petroleum ether; product contains small amounts of higher polymers;;

: ammonium chloride

: 7782-50-5
chlorine

: 7719-12-2, 52843-90-0
phosphorus trichloride

A: 7647-01-0
hydrogenchloride

B: 940-71-6
2,2,4,4,6,6-hexachloro-1,3,5-triaza-2,4,6-triphosphorine

C cyclic polyphosphorus nitride dichloride: cyclic polyphosphorus nitride dichloride

D: 2950-45-0
octachlorocyclotetraphosphazene

Conditions	Yield
In further solvent(s) dissolving PCl3 distd. under N2 in (CHCl2)2 distd. under N2; addn. of NH4Cl dryed in vac. and passing in the corresponding amount of Cl2; heating in a stream of N2 at 130 °C; removal of formed HCl by a stream of N2;; filtration, distg. off the solvent at 40 °C and 0.5 Torr; recrystn. from petroleum ether; products (NPCl2)3, (NPCl2)4 and a small amount of oily polymers;;
In chlorobenzene dissolving PCl3 distd. under N2 in C6H5Cl distd. under N2; addn. of NH4Cl dryed in vac. and passing in the corresponding amount of Cl2; heating in a stream of N2 at 130 °C; removal of formed HCl by a stream of N2;; filtration, distg. off the solvent at 40 °C and 0.5 Torr; recrystn. from petroleum ether; product contains small amounts of higher polymers;;
In further solvent(s) dissolving PCl3 distd. under N2 in (CHCl2)2 distd. under N2; addn. of NH4Cl dryed in vac. and passing in the corresponding amount of Cl2; heating in a stream of N2 at 130 °C; removal of formed HCl by a stream of N2;; filtration, distg. off the solvent at 40 °C and 0.5 Torr; recrystn. from petroleum ether; yield 35-40 %, product contains small amounts of higher polymers;;	A n/a B 35-40 C n/a D n/a

: 10026-13-8, 874483-75-7
phosphorus pentachloride

: ammonium chloride

: 2950-45-0
octachlorocyclotetraphosphazene

Conditions	Yield
In further solvent(s) react. of PCl5 with NH4Cl in (CHCl2)2;; recrystn. of the fraction containing (NPCl2)4 (180-187 °C at 10 Torr) from ethyl ether under discoloration of coal;;
In further solvent(s) react. of PCl5 with NH4Cl in (CHCl2)2;; recrystn. of the fraction containing (NPCl2)4 (180-187 °C at 10 Torr) from ethyl ether under discoloration of coal;;

: 10026-13-8, 874483-75-7
phosphorus pentachloride

: ammonium chloride

A: 940-71-6
2,2,4,4,6,6-hexachloro-1,3,5-triaza-2,4,6-triphosphorine

B cyclic polyphosphorus nitride dichloride: cyclic polyphosphorus nitride dichloride

C: 2950-45-0
octachlorocyclotetraphosphazene

Conditions	Yield
In not given react. of 400 g PCl5 with 120 g NH4Cl in an inert solvent;; sucking off the formed mass, washing with ice-cold C6H6; fractional distn.; yield 50 % (NPCl2)3, 25 % (NPCl2)4 and 25 % higher polymers;;

: 10026-13-8, 874483-75-7
phosphorus pentachloride

: ammonium chloride

A: 940-71-6
2,2,4,4,6,6-hexachloro-1,3,5-triaza-2,4,6-triphosphorine

B: 2950-45-0
octachlorocyclotetraphosphazene

Conditions	Yield
In not given react. of 400 g PCl5 with 120 g NH4Cl in an inert solvent;; sucking off the formed mass, washing with ice-cold C6H6; fractional distn.; yield 75 g (NPCl2)3, 25 g (NPCl2)4;;
In not given react. of PCl5 with NH4Cl;; fractionation at 185-190 °C and 13 Torr; fraction contains 10 % (NPCl2)3;;
In not given react. of PCl5 with NH4Cl;; fractionation at 185-190 °C and 13 Torr; fraction contains 10 % (NPCl2)3;;
In further solvent(s) react. of finely divided NH4Cl and PCl5 in refluxing sym-tetrachloroethane; fractional crystn. from glacial acetic acid, cold benzene and conc. H2SO4;

: ammonium chloride

: bis(trichlorophosphine)iminium chloride

: 2950-45-0
octachlorocyclotetraphosphazene

Conditions	Yield
In not given react. of (Cl3PNPCl3)Cl with NH4Cl;;
In not given react. of (Cl3PNPCl3)Cl with NH4Cl;;

: 19597-69-4
lithium azide

: 2007-97-8
trichloro(o-phenylenedioxy)phosphorane

A: 940-71-6
2,2,4,4,6,6-hexachloro-1,3,5-triaza-2,4,6-triphosphorine

B: 22295-99-4
hexaazido cyclotriphosphazene

C: 2950-45-0
octachlorocyclotetraphosphazene

Conditions	Yield
In nitrobenzene not isolated, detected by NMR;

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